panel.html

<!DOCTYPE html>
<html>
  <head>
    <link rel="stylesheet" href="panel.css" />
    <script src="third-party/jquery-3.7.0.min.js"></script>
  </head>
  <body>
    <header id="header"></header>
    <main class="content">
      <div><p>Find more cards and payment methods on <a href="https://docs.adyen.com/development-resources/testing/test-card-numbers" target="_blank">Adyen docs</a></p></div>
      <div class="search-container">
        <input id="search" class="search-input" type="text" placeholder="Filter..." autocomplete="off" />
      </div>
      <div id="cards">
      </div>
    </main>
    <script src="panel.js"></script>
  </body>
</html>